Sucky dyno numbers
03-26-2014, 09:36 AM
#27
I did look at that when putting the front cover on and, other than being 180 degrees out (which is of no consequence from what I'm reading), it was straight - both dots at 12 o'clock
Even so, wouldn't being off a full tooth show up as odd timing advance values the tuner would clearly see? (I'm at the outer edge of my knowledge here.) But, to your point, I think I recall seeing the advance in the high 30s at moderate throttle and, according to this article, too much timing costs power...
Even so, wouldn't being off a full tooth show up as odd timing advance values the tuner would clearly see? (I'm at the outer edge of my knowledge here.) But, to your point, I think I recall seeing the advance in the high 30s at moderate throttle and, according to this article, too much timing costs power...
03-26-2014, 09:55 AM
#28
I did look at that when putting the front cover on and, other than being 180 degrees out (which is of no consequence from what I'm reading), it was straight - both dots at 12 o'clock
Even so, wouldn't being off a full tooth show up as odd timing advance values the tuner would clearly see? (I'm at the outer edge of my knowledge here.) But, to your point, I think I recall seeing the advance in the high 30s at moderate throttle and, according to this article, too much timing costs power...
Even so, wouldn't being off a full tooth show up as odd timing advance values the tuner would clearly see? (I'm at the outer edge of my knowledge here.) But, to your point, I think I recall seeing the advance in the high 30s at moderate throttle and, according to this article, too much timing costs power...
03-26-2014, 10:16 AM
#29
But, to your point, I think I recall seeing the advance in the high 30s at moderate throttle and, according to this article, too much timing costs power...
Bottom line (as it relates to this discussion) is that he did two dyno pulls on my car to demonstrate that higher timing advance does not necessarily generate higher power. IIRC, my car made about 5% less power with 26 degrees of advance compared to 21 degrees of advance. I think that most tuners would **** an eyebrow if you told them that your tuner applied 30+ degrees of advance.
I wasn't aware that anyone was interested in that. Right now, I'm taking it easy because of a couple of issues that developed over the winter (I need to replace a least one exhaust valve seal and replace the front bumper following that fender bender, for aerodynamics if nothing else). Once I get the immediate problems solved, I'll give it a shot. Might take 3-4 weeks before everything is in perfect shape.
Last edited by FuzzyLog1c; 03-26-2014 at 10:27 AM.
03-26-2014, 02:36 PM
#31
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My dyno. Much smaller cam. Stock heads. but the larger Kooks(but high flow cats). I would assume heads and a bigger cam should have you at or over 420whp.
03-26-2014, 02:39 PM
#32
I did look at that when putting the front cover on and, other than being 180 degrees out (which is of no consequence from what I'm reading), it was straight - both dots at 12 o'clock Even so, wouldn't being off a full tooth show up as odd timing advance values the tuner would clearly see? (I'm at the outer edge of my knowledge here.) But, to your point, I think I recall seeing the advance in the high 30s at moderate throttle and, according to this article, too much timing costs power...
He already has 3 degree advance ground in. Power should be coming on at around 1800-2000rpm with that type of cam.
You'd have to be fairly asleep at the wheel to mess up cylinder 1 TDC, align two dots. I would bet on your tune more than anything.
03-26-2014, 09:37 PM
#33
I think you might want to look for a different tuner. When I was getting my car tuned @ Slowhawk, I asked Don a whole bunch of noobish questions (probably drove him nuts) about commonly accepted "rules of thumb" that I had heard online.
Bottom line (as it relates to this discussion) is that he did two dyno pulls on my car to demonstrate that higher timing advance does not necessarily generate higher power. IIRC, my car made about 5% less power with 26 degrees of advance compared to 21 degrees of advance. I think that most tuners would **** an eyebrow if you told them that your tuner applied 30+ degrees of advance.
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Bottom line (as it relates to this discussion) is that he did two dyno pulls on my car to demonstrate that higher timing advance does not necessarily generate higher power. IIRC, my car made about 5% less power with 26 degrees of advance compared to 21 degrees of advance. I think that most tuners would **** an eyebrow if you told them that your tuner applied 30+ degrees of advance.
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03-26-2014, 10:21 PM
#34
Damn! Those are low numbers! Similar mods on the LS6 vettes around here are making about 465 whp on a Mustang eddy current dyno.
I use Mike at OSTdyno in PA who can sniff out all the bad tuning in any make or model - either that or will identify exactly what's not working right if not the tune.
I use Mike at OSTdyno in PA who can sniff out all the bad tuning in any make or model - either that or will identify exactly what's not working right if not the tune.
